Home / 100,366.07-138,507.12-55,041.35

Finding the Fourth Proportional to 100,366.07, 138,507.12 and 55,041.35

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Solution

The fourth proportional to 100,366.07, 138,507.12 and 55,041.35 is: 75,958.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,366.07 : 138,507.12 = 55,041.35 : x
  2. Step 2: Convert to fraction form
    100,366.07/138,507.12 = 55,041.35/x
  3. Step 3: Cross multiply
    100,366.07x = 138,507.12 × 55,041.35
  4. Step 4: Simplify right side
    100,366.07x = 7,623,618,176.88
  5. Step 5: Solve for x
    x = 7,623,618,176.88/100,366.07
  6. Step 6: Final answer
    x = 75,958.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.